Any kind of material form whatever, whether past, future or present, internal or external, gross or subtle, inferior or superior, far or near, all material form should be seen as it is with proper wisdom thus :
‘This is not mine, this I am not, this is not my self.’
[This includes] Material form, feeling, perception, formations and consciousness.
Majjhima Nikaya : 62 : Maharahulovada Sutta
(The Greater Discourse of Advice to Rahula)